10/09/2007 5:00 PM 10"250Brad Allenby, Arizona State UniversityDescription: If you take as a given that humans now live on a geoengineered planet, then what is our responsibility for the future? Before discussing how to deal with Earth ...

10/09/2007 3:30 PM 10"250Roger Angel, Director, Steward Observatory Mirror Laboratory, University of ArizonaDescription: It took a crisis to shift Roger Angel's gaze from the stars back to Earth, but we may all benefit from his full atte...

10/04/2007 11:10 AM Broad InstituteMax Tegmark, Associate Professor of Physics, Department of Physics, MITDescription: In spite of its old age, the Second Law of Thermodynamics "is alive and kicking," says Max Tegmark, stimulating resear...

10/04/2007 10:20 AM Broad InstituteCharles Bennett, IBM Fellow, IBMDescription: In this often droll lecture on a very abstract subject, Charles Bennettexplores entropy, "one of my long loves," and how it relates to quantum information. ...